SUNO SONG TO RHYTHM AND LEAD GUITAR TABS: THE TWO-PASS STEM TUTORIAL
You wrote a song in Suno. The full-mix transcription got you most of the way to a playable tab, but the guitar feels a little off. The chords keep flipping between similar voicings, the bends are a little imprecise, or the bass is sneaking into your tab as ghost notes. This tutorial walks the two-pass workflow that fixes that, and shows how to go one step further to get rhythm and lead guitar as separate tabs.
The short version: upload your Suno song, download the Guitar Only stem, upload the stem as a second song. The pipeline transcribes a guitar-isolated track more cleanly than a full mix because there are no drums, vocals, or bass to confuse the chord recognizer or the bend detector. About ten minutes total, Pro tier required for the stem download.
WHY THE TWO-PASS WORKFLOW PRODUCES CLEANER TABS
Every audio-to-tab transcription pipeline, including audio2guitar, starts by separating the guitar from the rest of the mix. This is called music source separation. It works, but it is not perfect. When the original mix is dense (vocals, bass, drums, synth pads, AI artifacts that don't quite sound like any real instrument), some of those signals leak into the isolated guitar before the rest of the pipeline runs.
The downstream stages, chord recognition, polyphonic pitch tracking, beam-search fingering selection, and technique annotation for bends, slides, and palm muting, all have to work around that leakage. They are designed to handle it, but the cleaner the input, the cleaner the output.
The two-pass workflow uses audio2guitar's own source separation as a pre-processing step. The first pass produces a Guitar Only mp3 that contains essentially just the guitar. When you feed that mp3 back into the pipeline as the second pass, every downstream stage gets a much cleaner input than it had on the first pass. Chord recognition stops second-guessing between major chords and power chords. Bend amounts are estimated more precisely. Ghost notes from bass and percussion disappear.
STEP BY STEP: SUNO MP3 TO CLEANER GUITAR TAB
- Download your Suno song as mp3. Open the song in Suno, click the download icon, save the mp3. Any Suno tier works (free, Pro, or Premier). Note: Suno's free tier terms limit use to personal, non-commercial purposes.
- First pass: upload the mp3. Go to audio2guitar.com/suno. Drag your Suno mp3 into the upload box. The full pipeline runs in about three minutes: source separation, polyphonic pitch tracking, chord recognition across 170+ chord types, fingering selection by beam search, technique annotation, lyric extraction, and section labeling.
- Open the export menu and download the Guitar Only stem. From the song view, click the export button. Under Stems, click "Guitar Only (.mp3)". Pro tier required. You now have an isolated guitar mp3 of your Suno song.
- Second pass: upload the stem. Upload the Guitar Only mp3 as a new song at audio2guitar.com/suno. The pipeline now sees just guitar. No drums, no vocals, no bass, no synth. The chord recognizer, the bend detector, and the beam-search fingering picker all run on a cleaner input.
- Compare the two tabs side by side. Open both songs in the in-app tab player. Where they agree, you have high confidence the transcription is right. Where they disagree, the second-pass tab is usually closer to truth on chord type, bend amount, and technique annotation. The first pass is sometimes closer on overall section structure because it had vocals to help mark verse-chorus boundaries.
- Pick a tab to learn from. Most players use the second-pass tab as the primary and check the first-pass tab when something looks odd. Edit fingerings inline if needed.
WHAT CHANGES BETWEEN PASS ONE AND PASS TWO
| Pass one (full mix) | Pass two (Guitar Only stem) | |
|---|---|---|
| Input | Suno mp3 with vocals, drums, bass, guitar, keys | Isolated guitar mp3 from pass one |
| Chord recognition | Competes with bass and vocals on harmonic content | Sees only guitar harmonics |
| Bend detection | Pitch tracking competes with sliding vocal melodies | Clean per-string pitch tracking |
| Power-chord vs full-chord | Sometimes flips depending on bleed | Stable |
| Ghost notes | Can pick up percussive bleed as notes | Rare |
| Section labels | Uses vocals to find chorus boundaries | Section labels less informed |
| Lyrics | Yes, word-level synced | Not produced (no vocals in input) |
| Best for | Quick playable tab + lyrics + sections | Maximum guitar accuracy when you already know the song structure |
Most players keep the first-pass tab open for section navigation and lyrics, and use the second-pass tab as the source of truth for individual notes and chords.
GOING FURTHER: SPLIT RHYTHM AND LEAD BY SECTION
audio2guitar does not split rhythm guitar from lead guitar automatically. The Guitar Only stem is one stem, not two. But most Suno songs have rhythm dominating the verses and lead dominating the choruses, bridges, or solo sections. You can exploit that structure with a free audio editor.
- Open the Guitar Only mp3 in Audacity or any free editor. The waveform will visually show the dense rhythm-strumming sections vs the sparser, more articulate lead sections.
- Use your first-pass tab as the section map. The first-pass tab already labeled verse, chorus, bridge, and solo with timestamps. Use those timestamps to find the rhythm section and the lead section in the editor.
- Export each section as its own mp3. For example, "my-song-verse-rhythm.mp3" and "my-song-chorus-lead.mp3". Keep the original waveform intact, just trim the boundaries.
- Upload each section as its own song. Each one becomes a focused tab of just the rhythm part or just the lead part. The transcription is even more accurate because the pipeline sees a shorter, more uniform clip.
- Print both tabs and practice them side by side. On Pro, use Print / PDF to send both tabs to your music stand. Practice the rhythm tab against a loop of the chorus, then layer the lead on top.
Cost: four uploads (one full mix, one stem, two trimmed sections) against your monthly Pro quota. Time: about fifteen to twenty minutes from Suno download to playable rhythm-and-lead tabs.
WHEN THE TWO-PASS FLOW IS WORTH IT
- The first-pass chords keep flipping. If you see the same passage labeled E one beat and Em7 the next, the chord recognizer is hedging because of mix bleed. Second pass usually stabilizes it.
- The Suno song has heavy production. Dense drums, synth pads, doubled vocals, or sub-bass all bleed into the guitar isolation stage. The denser the mix, the more the second pass helps.
- You want to learn the solo precisely. Lead-guitar bends, hammers, and slides are the part of the transcription that benefits most from cleaner input. If the solo is the reason you want this song on guitar, do the second pass.
- You're going to print it or share it. First-pass is fine for quick personal practice. Second-pass is what you want if you're sharing the tab with a band or printing it for a setlist.
When to skip: clean acoustic Suno tracks with prominent guitar already transcribe well on the first pass. Two passes won't change much. Save the quota for messier mixes.
FAQ
Do I need Pro to do the two-pass workflow?
Yes. Pro unlocks the Guitar Only stem download, which is the input for the second pass. Free tier transcribes the full mix in one pass and is enough if you just want a single tab without separating instruments.
Will the second pass split rhythm guitar from lead guitar automatically?
No. The audio2guitar pipeline outputs one guitar stem, not separate rhythm and lead stems. To get rhythm and lead as separate tabs, you trim the guitar stem by section in any audio editor (Audacity is free) and upload each section as its own song. The two-pass flow on its own gives you a cleaner single-guitar tab.
How much more accurate is the second pass?
It varies by song. Songs with heavy drum, bass, or synth content see the biggest improvement because the first pass is competing with all of that. On a clean acoustic-guitar Suno track, the difference is small. The improvement is most visible in chord recognition (cleaner power-chord vs full-chord calls) and bend amount precision.
Does this work for Udio or Google Flow songs too?
Google Flow yes. Udio, no, because Udio's October 2025 terms of service prohibit redistribution of output. The workflow itself (full song to stem to re-upload) works the same for any audio source audio2guitar accepts.
Does the two-pass flow count as two songs against my Pro quota?
Yes. Each upload is a separate song. If you do a full pass plus three trimmed-section passes for rhythm/lead/solo separation, that's four songs.
Can I just trim sections of the original Suno mp3 instead of using the guitar stem?
You can, but the stem-then-trim path produces cleaner tabs because the trimmed audio doesn't have vocals or drums interfering. If you trim the original mix instead, you're back to first-pass quality just on a shorter clip.
What if the guitar stem sounds wrong or has bleed from other instruments?
Mild bleed is expected. Source separation isn't perfect, especially when guitar overlaps in frequency with vocals or keys, and the pipeline is trained to handle that on second-pass input. If the bleed is severe (drums clearly audible), the source separation likely struggled with this specific Suno mix, and a different Suno render with a more prominent guitar usually fixes it.
Will the second pass produce different fingerings than the first?
Possibly. Beam search picks fingerings based on note context. With cleaner input, the chord recognition can swing between similar voicings (E vs Em7, A5 vs A power chord shape). Review the second-pass output if the first pass was already close to what you wanted.
TURN YOUR SUNO SONG INTO A PLAYABLE TAB
Start with the first-pass upload. Three songs free, no credit card. Upgrade to Pro when you're ready for the Guitar Only stem download and the two-pass workflow.
